Water-absorbing beads have become increasingly hazardous to children over the past 10 years, as children who swallow the beads can experience life-threatening problems such as bowel obstruction. In ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 106, No. 42 (Oct. 20, 2009), pp. 17644-17649 (6 pages) The "beads-on-a-string" model for folding of polymers is a ...
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